The MAF was investigated when the car played up the first time an nothing was found to be wrong.

All hoses checked and then double checked

Might try and swap the recirc valve back to the standard one to see if that makes any difference to things. (stabbing in the dark now).

Drove like a big bag of crap on my way to work this morning so I've now got the hump with it.

First thing to give us bother since we got it last March though I spose.